/**
* Copyright (c) 2003-2009, Xith3D Project Group all rights reserved.
*
* Portions based on the Java3D interface, Copyright by Sun Microsystems.
* Many thanks to the developers of Java3D and Sun Microsystems for their
* innovation and design.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the 'Xith3D Project Group' nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) A
* RISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE
*/
package org.xith3d.utility.comparator;
import java.util.Comparator;
/**
* Compares two Strings ignoring case.
*
* @author Marvin Froehlich (aka Qudus)
*/
public final class IgnoreCaseComparator implements Comparator< String >
{
public static final IgnoreCaseComparator INSTANCE = new IgnoreCaseComparator();
public static final boolean equalsIC( String string1, String string2 )
{
if ( string2.length() != string1.length() )
return ( false );
for ( int i = 0; i < string2.length(); i++ )
{
if ( Character.toLowerCase( string1.charAt( i ) ) != Character.toLowerCase( string2.charAt( i ) ) )
return ( false );
}
return ( true );
}
/**
* Compares two Strings ignoring case.
*
* @param string1
* @param string2
*/
public static final int compareIC( String string1, String string2 )
{
final int n = Math.min( string1.length(), string2.length() );
for ( int i = 0; i < n; i++ )
{
final char ch1 = Character.toLowerCase( string1.charAt( i ) );
final char ch2 = Character.toLowerCase( string2.charAt( i ) );
if ( ch1 < ch2 )
return ( -1 );
else if ( ch1 > ch2 )
return ( +1 );
}
if ( string1.length() < string2.length() )
return ( -1 );
if ( string1.length() > string2.length() )
return ( +1 );
return ( 0 );
}
/**
* Compares two Strings ignoring case.
*
* @param string1
* @param string2
*/
public final int compare( String string1, String string2 )
{
return ( compareIC( string1, string2 ) );
}
private IgnoreCaseComparator()
{
}
}